Mold for casting center-hung sash-weights.



PATENTED FEB. 20, 1906.

L. H. KNAPP. MOLD FOR CASTING CENTER HUNG SASH WEIGHTS.

APPLICATION ITILED MAR-2B, 1905.

N QM Attorneys UNITED STATES PATENT OFFIQE.

LOUIS H. KNAPP, OF PARKERSBURG, WEST VIRGINIA.

MOLD FOR CASTlNGtCENTER-HUNG SASH-WEIGHTS- No. 812,935. Specification of Letters Patent. Patented Feb. 20, 1906. Application filed March 28. 1905. Serial No. 262,605.

T a l wYwm it may c c i movable mold-sections 6 and 7, the latter be- Be it known that I, LoUrs H. KNAPP, a ing constructed exactly alike and movable citizen of the United States, residing at Parlaterally on the base 'to operative and inopkersburg, in the county of Wood and State e'rative positions. 60 of West Virginia, have invented a new and The movable sections are each provided useful Mold for Casting Center-Hung Sashwith a plurality of spaced vertically-disposed Weights, of which the following is a specificagrooves or channels 8, adapted to register tion. with each other when said sections are moved This invention relates to certain improveto closed or operative position to thereby 65 1o ments in molds, more particularly to a novel form molding compartments or chambers 9, form of mold especially designed for molding into which the molten metal flows from the center-hung sash-weights. pouring-basins 10 through the gates 11.

The object of the invention is to provide a The groove or channel 8 of one movable simple, durable, and eflicient mold of this mold-section is provided near its lower end 70 I 5 character, preferably formed in three secwith a lateral projection or core 12, which extions, two of which are movable laterally to tends partly across the molding-compartoperative and inoperative positions upon the ment and engages a vertically-disposed core third. member 13, secured to or formed integral A further object is to provide means for with the base or stationary mold-section 5. 75 2o cooling the several sections of the mold dur- The projection or core 12 is designed to form ing the pouring or casting operation by passthe recess 14 in the sash-weight 15 while the ing a stream of water or other cooling mecore 13 forms the central opening 16, which dium through said mold-sections, thereby communicates with the recess 14 and is depreventing excessive heating of the latter signed to receive the supporting-cord by 80 and permitting the continuous operation of which the weight is suspended from the winthe mold. dow sash. The cores 12 are preferably With these and other objects in view the curved, as indicated at 17, while the free ends invention consists in the construction and of the cores 13 are reduced, as shown at 18, novel combination and arrangement of parts to render the adjacent walls of the central 5 hereinafter fully described, illustrated in the opening curved or rounded, so as to prevent accompanying drawings, and pointed out in cutting or otherwise injuring the supportingthe claim hereto appended, it being undercord. stood that various changes in form, propor- Secured to the opposite ends of the movtions, and minor details of construction may able mold-sections are laterally-extending 9 be resorted to without departing from the lugs 19, over which suitable links 20 are principle or sacrificing any of the advantages placed, the latter being fitted with clampingof this invention. screws 21, adapted to engage the flat side In the accompanying drawings, forming a faces of the lugs and by means of which the part of this specification, Figure 1 is a front two sections are or may be securely locked 95 4 elevation of a mold constructed in accordtogether during the pouring or casting operance with my invention, showing the several ation. sections in position for molding or casting The sides of the sections 6 and 7 are prefthe sash-weights. Fig. 2 is an end view of erably formed with spaced ears 22, between the same. Fig. 3 is a transverse sectional which are mounted for rotation suitable view taken on the line 3 3 of Fig. 1. Fig. 4 is wheels or rollers 28, which bear upon the upa side elevation, partly in section, of a cenper flat surface 24 of the base or stationary ter-hung sash-weight made by the mold mold-section and facilitate the lateral moveshown in Fig. 1. ment of the former. Secured to the sections Similar numerals of reference indicate cor- 6 and 7 and arranged in vertical alinement 5 5 responding parts in all the figures of the with the ears 22 are lateral extensions 25, drawings. each provided with an inclined slot or recess The improved mold is particularly de- 26, adapted to receive a lever or bar, so that signed for manufacturing what are com by inserting one end of the bar or lever in the monly called center-hung sash-weights, recess and exerting a lateral pull on the oppo- I 10 and to this end the device comprises a base site end thereof the sections 6 and 7 may be or stationary mold-section 5 and a pair of moved to inoperative position to permit the discharge of the molded product Without danger of burning or otherwise injuring the hands of the operator.

As a means for cooling the movable sections during the pouring or casting operation I provide the same with a plurality of spaced horizontally-disposed passages or flues 27, each provided with an inlet 28 and an outlet 29 and through which water or other cooling medium is adapted to circulate. One or more similar passages or flues 30 may also be formed in the base or movable section 5, if desired, in order to keep the latter cool. By having the Water circulate through the flues or waterpassages in the several mold-sections the latter are prevented from becoming unduly heated,thereby insuring the continuous operation of the mold. It will of course be understood that the several mold-sections may be formed either with or without the water-passages and that any suitable locking device may be employed for clamping the sections together instead of the links and clamping screws shown.

In operation when it is desired to pour, cast, or otherwise mold one or more sashweights the movable mold-sections are drawn together and securely fastened by placing the link over the locking-lugs and tightening the clamping-screws. The molten metal is then poured or otherwise introduced into the basins, from whence it flows through the gates 11 into the molding compartments or chambers. The sections 5 and 6 are then released and moved laterally to inoperative position by inserting a bar in the recess 26 and exerting a lateral pressure thereon, as before stated, thereby permitting the several sashweights to be conveniently removed. Attention is called to the fact that the base of the stationary mold-section is made relatively wide with respect to the movable sections, thereby affording a support for the latter when in both open and closed positions.

From the foregoing description it will be seen that there is produced an extremely sim- I ple and inexpensive mold by means of which center-hung sash-weights may and conveniently manufactured.

Having thus described the invention, what is claimed is- In a mold, a stationary mold-section provided with a vertically-disposed eye-forming core and defining a smooth unobstructed bearing-surface on each side of the core, a pair of movable mold-sections slidably mounted on the bearing-surface of the stationary section and each provided with a vertical recess adapted to register with the recess in the adjacent section when said sections are in closed position, said stationary mold-section being of suflicient Width to form a support for the movable sections when in both open and closed positions, a core projecting inwardly from one of the movable sections for engagement with the eye-forming core, longitud1nally-disposed lugs formed integral with the movable sections and provided with inclined recesses adapted to receive an operating-tool for adjusting the movbe quickly able sections to open and closed positions,.

spaced ears projecting laterally from the base of each movable section and disposed in alinement with the lugs, rollers journaled in said ears and adapted to engage the smooth bearing-surface of the stationary mold-section, and means for clamping the mold-sections in closed position, there being a passage formed in the stationary section beneath the eye-forming core to permit the circulation of a cooling medium and a plurality of passages formed in the movable sections and openlng at each end through the side walls of said sections. I

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

LOUIS H. KNAPP Witnesses:

WM. JENKINsON, T. HAGEL. 

